The Patient's X-Ray Revealed Subchondral Cysts, Subchondral Sclerosis, and Joint

The patient's x-ray revealed subchondral cysts, subchondral sclerosis, and joint space narrowing. Which is the correct translation of subchondral sclerosis?

A) sub (bad) + chondr (bone) + al (condition) + sclerosis (hardening condition) = bad bone hardening condition
B) sub (beneath) + chondr (cartilage) + al (pertaining to) + sclerosis (hardening condition) = hardening condition beneath the cartilage
C) sub (good) + chondr (joint) + al (condition) + sclerosis (hardening condition) = good joints that are beginning to harden
D) sub (out) + chondr (movement) + al (pertaining to) + sclerosis (softening condition) = pertaining to movement outside the range of motion
E) sub (upon) + chondr (muscle) + al (condition) + sclerosis (softening condition) = muscle tissue on the bone is beginning to soften